Period	Persons
1967-01-01	311550
1972-01-01	302450
1977-01-01	306970
1982-01-01	325898
1987-01-01	344485
1992-01-01	361260
1997-01-01	375236
2002-01-01	395969
2007-01-01	406724
2012-01-01	419455